Grease-cup.



G. H. CLARK.

GREASE CUP. APPLICATION FILED JULY 28, 1913.

1 988,5 38. Patented Feb. 24, 1914.

COLUMBIA PLANOGRAPH COWWASHINGTON. n. c-.

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rnr F GREASE-CUP.

To all whom it may concern Be it known that I, CHESTER H. CLARK, a citizen of the United States, residing at Ash Fork, in the county of Yavapai and State of Arizona, have invented certain new and useful Improvements in Grease-Cups, of which the following is a specification.

My invention relates to improvements in grease or lubricating cups, the present em bodiment being particularly designed and adapted for use in connection with the hearing portions of the ordinary side or connecting rods of a locomotive engine, it being obvious however, that the improved grease or lubricating cup may be used in connection with various other bearings or journals requiring lubrication.

The primary object of the invention is to provide a generally improved grease or lubricating cup of exceedingly simple, cheap, and efficient construction which may be readily applied to or detached from the bearing or journal to be lubricated and having its parts so arranged and disposed relative to each other as to reduce to a minimum any liability of the parts to become loose or lost while in service.

A still further object is to provide an im proved grease cup in which the piston or follower member can only be removed from the lower end of the cup, proper, and then only by the removal of the latter from the bearing or journal to which it is attached.

With the above mentioned and other ends in view, the invention consists in the novel construction, arrangement, and combination of parts, hereinafter described, illustrated in one of its embodiments in the accompanying drawings and particularly pointed out in the appended claims.

Referring to the drawings, forming a part of this specification, Figure 1, is a side elevation, partly broken away, of the bearing head or portion of one of the side or connecting rods of a locomotive engine equipped with a grease cup constructed in accordance with my invention, the improved grease or lubricating cup being shown in central vertical section. Fig. 2, a perspective view of the piston or plunger plug, removed.

Fig. 3, a top plan view of the improved grease or lubricating cup parts being shown in operative or assembled position.

Similar numerals of reference designate like parts throughout all the figuresof the drawings.

Specification of Letters Patent.

Application filed July 28, 1913.

Patented Feb. 24, isle. Serial No. 781,457.

The impro ved grease 0r lubricating cup comprlses a cylindrical shaped cup 1 provided at 1ts lower end with external threads for threading into a similarly shaped threaded opening in the journal or bearing portion to be lubricated, said externally threaded portion preferably terminating in an angular or polygonal shaped abutment 1*, said abutment 1, in the present instance, being of a hexagonal shape for the convenient use of a wrench in applying the improved cup to or detaching the same from the bearing or journal to be lubricated.

The improved cup 1 is provided, substantially throughout its length, with internal threads to receive an externally threaded piston or plunger member 2, and as a means for preventing the latter from being removed from or accidentally coming out of the cup 1, when the latter is appliedinits operative position as shown in Fig. 1 of the drawings, the upper end of the cup is provided with an angular or an inwardly extending flange 1 As a means for operating or rotating the plunger or piston member 2 whereby the latter may be caused to traverse the internally arranged threads of the cup as in forcing the grease or lubricant out of the cup and into the bearing or journal to be lubricated, or in replenishing the cup with a suitable supply of grease or lubricant, the piston or plunger member 2 is provided with an angular shaped head 3 said head 3 being of less diameter than the opening 1 afforded by the flange 1 at the top of the cup, and through which opening 1 the head 3 and piston or plunger member 2 may be operated by means of ti. wrench or other suitable and convenient too As a suitable and convenient means for afi'ording access to the interior of the cup when applied, or in opening and closing same in the act of replenishing the lubricator cup with a suitable supply of lubricant, the piston or plunger member 2 is provided with a threaded opening adapted to receive and contain a threaded plug 3 of which the head 3 above described forms a part, said plug 8 having an annular flange or abutment 3 of less diameter than the opening l so that the plug may be readily inserted or removed through the opening 1 for the purposes above mentioned. The removable piston or plunger plug is preferably provided with an elliptical or domeshaped cavity 3 as indicated by dotted lines in Fig. l, of the drawings.

In the present embodiment of my invention I have shown the same applied to the bearing head or portion P of an ordinary connecting or side rod 4; of a locomotive engine, said head 4 being provided with an external grease cup or shell 4 the latter being internally threaded for the reception of the lower externally threaded portion of the grease or lubricator cup 1, said cup or shell portion a forming the base part of the cup 1 when applied, and affording an auxiliary receptacle or chamber 4 and from which receptacle or chamber 4 the usual lubricant duct el may lead to the hearing or meeting surfaces to be lubricated.

From the foregoing description taken in connection with the accompanying drawings, the operation and advantages of my invention will be readily understood;

Having thus described one of the embodiments of my invention, what I claim and desire to secure by Letters Patent is,-

1. A grease-cup, comprising an internally threaded cylindrical cup provided with an externally threaded angular shaped base and a reduced opening at its top, a threaded plunger having a threaded opening, and an operating plug in the latter and adapted to be inserted through and to be operated from said reduced opening.

2. A grease-cup provided with internally arranged threads extending throughout its length and terminating at its top in an inwardly extending flange affording a reduced opening, a threaded plunger member adapted to abut against said flange and to be removed from the lower end of said cup, and a threaded plug mounted in and adapted to operate said plunger member, said plug having an angular shaped head and being of less diameter than said opening at the top of said cup.

3. In a grease-cup, the combination with an internally threaded cup terminating in an overhanging flange at its top, said flange affording a reduced opening; of a threaded plunger adapted to be inserted and removed from the bottom of said cup and to abut against said overhanging flange, and a plun ger operating plug adapted to afford access to said cup beneath said plunger and to be inserted through and to be operated from said reduced opening.

4. In a grease-cup, a cylindrical shaped cup provided at its lower end with external threads terminating in an angular abutment, said cup having an inwardly extending flange at its top affording an opening and being provided with internally arranged threads extending from said flange, an internally threaded plunger member mounted in said cup and provided with a threaded opening, and a threaded plug mounted in said threaded opening of said plunger member and provided with an angular shaped plunger actuating head adapted to extend through and to be operated from the opening of said cylindrical shaped cup.

5. An internally threaded grease-cup provided with an externally threaded open base having an angular shaped abutment, and an inwardly extending abutment flange affording a reduced opening at the top, a plunger member adapted to be inserted in and removed from said open base and provided with a threaded opening of less diameter than said reduced opening, and an operating plug mounted in said threaded opening of said plunger member and adapted to be inserted through and operated from said reduced opening. 7

In testimony whereof I have affixed my signature in presence of two witnesses.

CHESTER H. CLARK.

Witnesses CHESTER DIoKERsoN, JOHN D. BISHOP.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. O. 

